Doosan DX340 DX340LC K1004522B bomba hidráulica para excavadora

A8VO200 Hydraulic Main Pump for Doosan DX340 DX340LC | OEM Part No. K1004522B 40mostrar contactos K1004522C

1. Product Overview
The A8VO200 is a high-pressure, twin-circuit variable displacement axial piston pump designed to meet the heavy-duty demands of 34-ton class excavators. As the primary power source for the Doosan DX340, it provides the massive oil flow required for rapid arm movement, high breakout force, and powerful travel motor performance. Its sophisticated regulator system ensures that hydraulic power is balanced perfectly with the engine's output, preventing stalling while maximizing cycle speeds.

2. Comprehensive OEM Part Number Compatibility
This pump is a 100% direct "bolt-on" replacement for Doosan and Rexroth factory part numbers.

Common Part Numbers:
K1004522B, 40mostrar contactos, K1004522C, 40mostrar contactosA.

Machine Fitment:

Doosan DX340 Excavator

Doosan DX340LC Excavator

Doosan DX340LCA (Tier 2/Tier 3 variants)

Compatible with select Daewoo Solar 340LC-V models (please verify via serial number)

3. Technical Specifications & Performance
Pump Series: A8VO Series 63 (or equivalent OEM spec)

Displacement: 200cc per revolution (twin pump configuration)

Pump Type: Variable Displacement Axial Piston Pump

Operating Pressure: Rated for high-pressure operation (nominal 350 bar / peak 400 bar) to ensure maximum digging performance.

Control System: Equipped with electronic or hydraulic proportional control (depending on sub-model) to optimize fuel efficiency and multi-function responsiveness.

Internal Components: Features hardened cylinder blocks, precision-ground pistons, and high-load bearings for long-term durability in abrasive environments.

4. Why Partner With a 13-Year Industry Expert?
Technical Mastery: We specialize in large-displacement Rexroth-style pumps. We understand the specific regulator settings (negative flow control vs. positive flow control) required for Doosan hydraulic systems.

Rigorous Bench Testing: Every A8VO200 unit undergoes a full-load performance test on a high-capacity hydraulic test bench. We verify volumetric efficiency, pressure stability, and seal integrity at maximum operating temperatures.

Factory-Direct Value: Access Original New or Premium OEM-spec units at competitive wholesale prices, providing significant savings compared to local heavy equipment dealerships.

Global Rapid Logistics: Due to the weight of the A8VO200, units are secured in reinforced, heavy-duty export wooden crates. We offer express air freight via DHL, FedEx, or UPS, typically arriving in 3 to 7 business days.

5. Critical Installation & Maintenance Protocol
Case Priming (Non-Negotiable): You must fill the pump housing with clean hydraulic oil through the highest drain port before starting the engine. Running a 200cc pump "dry" for even a few seconds will cause catastrophic internal failure.

System Flushing: If the previous pump failed mechanically (sending metal into the system), you must flush the entire hydraulic tank, main control valve, and oil cooler. Residual debris is the #1 cause of failure for new pumps.

Filter & Oil Service: Replace all hydraulic filters (return, suction, and pilot) and ensure the hydraulic oil meets ISO VG46 or VG68 standards.

Air Bleeding: After installation, run the engine at low idle and cycle the hydraulic functions without load to purge any trapped air from the system.

6. Ordering & Professional Support
Fitment Verification: To ensure 100% accuracy, please provide your Machine Serial Number or a photo of the data plate on your current pump.

Instant Quote: Contact us today for up-to-date pricing, availability, and tiered quality options (Original New vs. Premium Replacement).

Technical Guidance: Our expert team is available 24/7 to assist with installation procedures, regulator adjustments, and hydraulic troubleshooting.